Oil burner



7 Sheets-Sheet 1 PERRY OIL BURNER Filed Jan. 21, 1929 Dec'. 20, 1932.

. @06772071' fink Fer l i a 'j w Dec. 20, 1932. s. PERRY I 1,891,835

OIL. BURNER Filed-Jan. '21. 1929 7 Shets-Sheet 2'.

Dec. 20, 1932. I s. PERRY 1,891,835

OIL BURNER med Jan. 21. 1929 7 Sheets-Sheet a Dec. 20, 1932.

s. PERRY 1,891,835 OIL BURNER Filed Jan. 21, 1929 7 bneetswheet q Dec.20, 1932. s. PERRY 1,891,835

OIL BURNER Filed Jan. 21; 1929 7 Sheets-Sheet 5 Dec. 20,1932. 5. PERRY 8I OIL BURNER Filed Jan. 21, 1929 7 ShBBtS-Shfiflt 6 Dec. 20, 1932. PERRY1,891,835

OIL BURNER Filed Jan. 21, 1929 7 Sheets-Sheet 7 iiiW!! "ili r I MUN.

15 mestic fuel oil may be used.

sectional elevation.

P wn n e. 20, 1932 UNITED STA ES PATENT OFFICE STANLEY PERRY, OFCHICAGO, ILLINOIS, ASSIGNOR TO AUTOMATIC BURNER CORPORATION, OF CHICAGO,ILLINOIS, A CORPORATION OF ILLINOIS" on. BURNER- Application filedJanuary 21, 1929. Serial No. 333,832.

One of my objects is to provide a construction of oil burner in which,by the use of a slow speed motor, the desired combustible mixture may beproduced.

6 Another object is to provide a simple and economical construction ofoil burner and of compact form.

Another object is to provide a construction of oil burner the parts ofwhich may be maintained relatively cool and the formation of carbon onthe stationary parts thereof prevented.

Another object is to provide a construction of oil burner in which allgrades of do- Another object is to provide a construction of oil burnerwhereby such a mixture of fuel and air and moving at such a rateofspeed, that it may be ignited close to the part of the burner fromwhich it issues thereby permitting of its ready ignition by an electricspark; and other objects as will be manifest from the followingdescription.

Referring .to the accompanying draw- Figure'l is a view inelevation of.a furnace equipped with an oil burner constructed in accordance with myinvention, certain parts of the structure shown being represented inFigure 2 is. a. broken view in sectional elevation of the burnerstructure, the section being taken 'at theline 2 on Fig. 9, and viewedin the direction of the arrow.

Figure 3' is a broken sectional detail view taken at the line 3 on Fig.2 and viewed in the direction ofthe arrow.

Figure 4 is a plan view of one of the similar clips for supporting themotor of the burner.

I Figure line 5 on Fig. 9 and viewed in the direction of the arrow.

Figure 6 is a broken sectional detail taken at the line 6 on Fig. 5 andviewed in the direction of the arrow.

Figure 7 is a plan view of the atomizer portion of the burner, a portionof the upper air deflecting plat-e being broken away.

59 Figure 8 is a vertical sectional view show- 5 is a broken sectiontaken at theing a portion of the burner structure, the section beingtaken at the line 8 on Fig. 12 and viewed in the direction of the arrow.

Figure?) is a plan sectional view taken at the line 9 on Fig. 2 andviewed in the direction of the arrow.

Figure 10 is a broken plan sectional view taken at the line 10 on Fig.5, and viewed in the direction of the arrow.

Figure 11 is a view in vertical sectional elevation of the ignitiondevice and the means for;El controlling the supplyingof gas thereto; an

Figure 12, an enlarged plan sectionalview taken at the line 12 on Fig. 1and viewed in the direction of the arrow.

Referring to the particular construction shown, 13 represents a furnacehaving a combustion chamber 14 the bottom of which is formed of a plate15 having a covering 17 of refractory material andthe wall of which islined with refractory material represented Y about its peripheryatintervals with depending bosses 22 containing downwardly opening annularrecesses 23 into which the upper ends of pipes 24: clamped to the bossesby set screws 25extend, the lower ends of the pipes 24 extendin intoopenings 26 in a base plate 27. Exten ing upwardly into the pipes 24;.are rods 28 supported on the floor and slidable in the pipes, theseseveral parts being held in vertically adjusted position by setscrews'29 on the plate 27 which extend through openings 30 in the pipes 24 andbear at their inner ends against the rods 28.

The construction shown also comprises a vertically disposed electricmotor 31, the armature shaft 32 of which extends upwardly centrallythrough the opening in the neck. ring 20 and is provided at its upperend, in-a plane above the neck ring, with a cup member 33 containing alarge central opening 34 in its bottom, a disk member 35 containingperipheral openings 36 flanked by depending vanes 37, and a deflectorplate 38 above the disk 35 and having its continuous peripheral edgeupwardly inclined as represented at 39. The assembly just referred toand comprising the armature shaft 32, cup member 33, vane-equipped disk35 and air-deflector plate 38, is of common and well-known construction,the cup member 33 being rigidly secured to rotate with the other partsjust referred to, as by welding it to edges of the vanes 37 along thelines represented at 40.

' The parts of the assembly just referred to are so constructed andarranged, in accordance with common practice, that oil fed to theinterior of the cup member 33 rises upwardly along the inner surface ofthe annular side wall of this cup member and discharges laterallyoutwardly throughout the periphery of the cup member through the spacebetween the cup member and the marginal edges of the air deflector plate38, during the rotation of the armature shaft 32, the fan devicecomprising the plate 35 and the vanes 37 operating to force air upwardyfor discharge through the space between the cup member 33 andthedeflector member 38 for atomizing the oil delivered by the cup member 33as stated.

The motor 31 is shown as supported by a hollow member 41 of generalfrusto conical form arranged concentric with the opening through theneck ring 20, the upper extremity of the member 41, which contains acene tral opening 42, preferably extending. a slight distance above thelower edge of the neck ring, as shown. The member 41 is provided atintervals with upwardly extending lugs 43 to which the lower ends ofupwardly extending bars 44 are connected as by the screws 45, these barsbeing equipped with outwardly extending studs 46 adapted to seat indepressions 47 formed in inwardly extending bosses 48 on the neck ring20.

The member 41 is provided about its peripheral edge with an upwardlyextending continuous flange 49 and is held rigidly to the neck ring 20as by means of set screws 50 threaded in bosses51 on the inner surfaceof the flange 49 and screwing against the underside of the flange 21 ofthe neck ring beyond, and adjacent to, a depending annular bead 52 onthe flange 21, the member 41 being thus clamped by the studs 46 andscrews 50 to the neck ring.

The motor 31 is sup-ported from the member 41 as by a circular series ofbrackets 53, preferably resilient, secured at their lower horizontalportions 54 to the underside of the member 41 and at their upperhorizontal portions 55 to the casing of the motor 31 as represented inFig. 2.

The means for supplying oil to the cup member 33 comprise a pipe 56containing oilfiow -controlling means represented at 57 as for exampleas commonly used in burner structures, and leading from any suitablesource of oil supply under moderate pressure or gravity head to thelower end of a pas sage 59 in a boss portion 60 of the member 41, theupper end of the passage 59 communicating with a pipe 61 which leadsupwardly through the neck ring 20 and the opening 34 in the cup member33 and has its discharge end 62 so positioned, as shown, that the oilforced through this pipe discharges into the lower trough portion of thecup member.

The upwardly extending annular flange 49 of the member 41 contains acircular series of openings 63 preferably disposed equidistantly aboutthis flange for the passage therethrough, controllably, of air fordischarge into the combustion chamber of the furnace, these openings 63being controlled by a split damper band 64 surrounding the aperturedportion of the flange 49 and containing openings 65 therein which in oneposition of the band 64 register with the openings 63. By rotatablyadjusting the band 64 on the flange 49 and clamping it thereto, as bythe clamping device represented at 66, the inlet of air to the furnacethrough the flange 49 may be regulated, as desired. v v

The construction shown also comprises a ring member 67 whichconcentrically surrounds the cup member 33 and is spaced there fromthroughout its periphery as shown to provide the annular space 68between these parts. The ring 67- is provided with an outwardlyextending annular flange 69 at its lower edge provided at intervals withdepending lugs 70 at which the ring 67 is supported on the upper ends ofthe bars 44, as by screws represented at 71.

Surrounding the ring 67 and resting upon the flange 69 is a ring 72provided about its periphery with a series of radially disposed vanes 73 which incline slightly downwardly. The outer marginal edge of the ring69 is located above the plane of the top edge of the neck ring 20 andslightly inwardly of this top edge, and the vanes 73 thus project acrossthe space between the flange 69 and the neck ring 20, as shown.

It may be here stated that in accordance with the particularconstruction shown provision is made not only for the passage of airupwardly through the cup member 33 and out through the space betweenthis cup member and the air deflector plate 38, but alsothrough thespace 68 and through the space over which the vanes, 73 extend, airbeing supplied to the burner'through' the opening 42 in the member 41and also, controllably, through the ring-flange 49.

The apparatus also comprises a fan 74 shown as of the propeller type andhaving blades of either a fixed 0r adjustable pitch, this fan beingfixed on the armature shaft 32 preferably at the point shown in thedrawings, namely, within the neck ring 20 and thus below the various airpassages above referred to.

1,aei,sss

The fan 74, in the particular construction shown, operates not only toforce air upwardly through the opening 34 in the cup member 33, but alsoto force air outwardly through the passage 68 and the passage over whichthe vanes. 73 extend, 'it having been found in practice that by forcingaid into the cup member 33, to augment the flow of air producedtherethrough by the operation of the fan device comprising the vanes 37,and particularly by forcing air through the air passage 68 and thepassage across which the vanes 73 extend, that the same efl'ectivecombustion of the fuel may be effected by a relatively slow speed motoras that produced by a burner construction not employing suchsupplemental fan and operating at relatively high speed, it beingunderstood that the use cated as close to the atomizer as possible.

The ignition means of the structure shown are represented generally at75. While such means may be of any desirable construction, theconstru'ction shown is preferred it being of the gas pilot typecomprising a burner at which a relatively small flame is maintained atall times and a flare burner which when gas is supplied thereto isignited by the constant pilot and projects, against the fuel issuingfrom the atomizer, a relatively long,

large, flame stream.

The construction of ignition means shown.

, comprises a member 76 formed of a block 77 a shell 78 of magneticmaterial secured to the lower end of the block and a second, hollow,member 79 secured to the lower end of the shell, this structure beingmounted on the upper end of a post 80 secured to the bed-plate 27. Theblock 7 7 contains a chamber 81 into which a pipe 82 leading from anysuitable constant source of gas supply, opens, between the top andbottom of this chamber. The block also contains a passage 82 whichopens,

through a constricted portion 83, into the chamber 81, this passagebeing equipped with a needle-valve 84 for controlling the amount of gasfed into the passage 82, from which latter it discharges into agas-pilot tube 85 ,which extends at its upper end adjacent the atomizer,the pilot tube 85 being shown as surrounded by=a sleeve 86.

The ignition means also comprises a flarejet device 87 7 shown as inthe'form ofia pipe 88 projecting upwardly above the upper end of thepilot tube 85 with its upperextremity deflected to extend substantiallyhorizontally as represented at 89 and in such position that the gasissuing from the pipe 88 will be directed across the flame'at the pilottube 85 and towards the burner structure, the gas issuing from the pipe88 becoming ignited by the pilot and in turn igniting the fueldischarged from the burner.-

The pipe 88 opens at its lower end into the upper end of a passage 90 inthe block 77,

the lower end of this passage opening into a passage 91 communicatingwith the bottom of the chamber 81, with a tapered valve seat 92therebetween, controlledby a ball valve 93 which when in engagement withthe seat 92 closes the passage 90 to the chamber 81.

Intthe use of oil burner structures in accordance with common practicegasv is supplied to the flare-jet 87 onlyupon the starting of thesupplying of oil to the burner, the supplying of gas to the flare-jetbeing discontinue'd after ignition of'the fuel issuing from the burner,this being commonly efi'ectedby mechanism operated automaticallyuponstart.- ing the fiow of oil to the burner, and commonly involving anelectric valve. 8 -.In the arrangement shown, such an electric valve isemployed, this valve comprising 21 solenoid 94 which is located'withinthe shell i 78 and is energized by current supplied through the wires 95and 96 as for example 1n accordance with common practice; the soleno1d 78 containing a sleeve 97 of non-magnetic material in. which the core 98of the solenoid, is reciprocable, the core 98 being connected by a pin99 with the lower end of a stem 100 secured to, and depending from, theball valve 93.

From the foregoing description it will be understood that when the.soleno'd 949 is energized, the valve 93'is raised from the seat 92 andgas thereupon flows to the fiarejet 88 for the purpose above stated.

' Provision of the constant pilot and the flare-jet device, togetherwith the valve controlling the supplying of gas to the fiare-jetl,

and the controllingmechanism for the valve, as a unitarydevice,-'presents considerable advantage over prior structures whereinthese elements are not combined, certa'n of which are'compactn-ess ofstructure, economy and rapidity of installation and simplicity ofstructure. r

While I have illustrated and described a particplar construc'tf onembodying my inyention, I do not WlSh to be understooclas Intending tolimit it thereto as the same may .be variously modified and. alteredwithout departing from'the spirit of my invention.

gwma I claim as new, and desireto secure Letters Patent, is:

1. .'In an oil burner, the combination of a motor, an atomizeropen, forthepassage of air therethrough and driven by said motor and to which theoil is supplied, members spaced from each other and from said atomizer,and a fan positioned to direct air into and through said atomizer andalso through the space between said members and between said members andsaid atomizer. 7

2. In an' oil burner, the combination of a motor, an atomizer open forthe passage of air therethrough and driven by said motor and towhich-the oil is supplied, members spaced from each other and from saidatomizer, and a fan positioned to direct air into said atomizer and alsothrough the space between said members and between said members'and saidatomizer, and a. ser'es of vanes against which the air forced throughthe space between said members impinges and by which said air isdeflected.

3. In an oil burner, the cbmbination of a motor, an atomizer open forthe passage of air therethrough and driven by sa'd motor and to whichthe oil is supplied, members spaced from each other and from saidatomizer, and a fan positioned to direct air into 'saidatomizer and alsothrough the space between said members and between sa'd members and saidatom'zer, and 3591185 0K .vanes against which the air forced througl thespace between-said members impinges and by which said air is deflected,said vanes extending from the top of said last-referred-. to spacepartway only across said space thereby afl'ording a lateral outlet forar below sa d vanes.

4. I an oil burner, the combination of a motor, an atomizer open for thepassage of air therethrough and driven by said motor and rotatable abouta substantially veriical axis and to which the oil is supplied andcomprising an air-forcing element located adjacent the d'scharge portionof said atomizer and operating to force atomizing air through saidatomizer, a deflector above said element and forming with .the iipperedge of said atomizer a laterally opening space through which the oiland the air operated on by said element flow, and a fan operating tosupplement said air-forcing element in forcing the air through saidatomizer.

5. In an oil burner, the combination of a motor, an atomizer open forthe passage of airtherethrough and driven by said motor and rotatableabout a substantially vertical. axisand to which the oil is supplied andcomprising an air-forcing element located adjacent the' dischargeportion of said atomizer and operating to force atomizing a'r throughsaid atomizer, a deflector above sa'd element and forming with theupperedge of said atomizer'a laterally opening space through which the oiland the air operated on sa d element flow and a fan driven by said motorand operating to supplement said air-forcing opening space through whichthe oil and the" air operated on by said element flow, a membersurrounding said atomizer .and spaced therefrom, and a fan positioned todirect air into and through said atomizer and also through the spacebetween said atomizer and said member.

7 In an oil burner, the combination of a motor, a cup member having anopen bot-.

tom and driven by, said motor and'to which oil is supplied and along theinner surface of the side of which the oil travels upwardly in therotation of said cup member, a fan in said cup member adjacent the upperedge thereof and operating to force atomizmg airthrough said atomizer,a. deflector above said fan and forming with the upper edge of said cupmember a laterally opening space through which the oil and the airoperated on by said fan flow, and a second fan positioned to force airinto said cup member through the bottom thereof and around said cupmember for mixture with the atomized fuel discharged from the cupmember.

8. In an oil burner, the combination of a motor, a cup member having anopen botthereof and operating to force atomizing air through saidatomizer, a deflector above said fan and forming with the upper edge ofsaid cup member a laterally opening space through which the oil and theair operated on said fan flow, and a second fan driven by said motor andpositioned to force air into said cup member through the bottom thereofand around said cup member for mixture with the atomized fuel dischargedfrom the cup member.

9. In an oil burner, the combination of a .motor, a cup member having anopen bottom and driven-by said motor and to which. oil is supplied andalong the inner-surface of the side of which the oil travels upwardly inthe rotation of said cup member, a fan in said cup member adjacenttheupper edge thereof and operating to force atomizing air through saidatomizer, a deflector above said fan and forming with the upper edge ofsaid cup 'member a laterally opening space through which the oil and theair operated on by said an flow, a second member surrounding, and spacedfrom, said cup member, and a second fan positioned to discharge air intosaid cup member and through the space between said cup member and saidsecond member.

10. In an oil burner, the combination of a motor, an atomizer open forthe passage of air therethrough and driven by said motor and to whichthe oil is supplied, said atomizer rotating about a substantiallyvertical axis, a fan in said atomizer located adjacent the dischargeportion of said atomizer and operating to draw air into said atomizerand discharge it therefrom to atomize the oil a deflector above said fanand forming'with the upper edge of said atomizer a laterally openingspace through which the oil and the 2 air operated on by said element'floW, andv a second fan operating to supplement said first named fan inforcing air through said atomizer. l

11. In an oil burner, the combination of a motor, an atomizer open forthe passage of air therethrough and driven by said motor and rotatableabout a substantially vertical axis and to which the oil is supplied andcomprising an air-forcing element located ad jacent the dischargeportion of said atomizer and operating to force atomizing air throughsaid atomizer, a deflector above said element and forming with the upperedge of said atomizer a laterally opening space through which the oiland the air operated on by said element flow, members spaced from eachother and from the atomizer and a fan positioned to direct air into andthrough said atomizer to supplement said air forcing means and alsothrough the spaces between said members and between said members andsaid atomizer.

STANLEY PERRY.

